Comorbidities in osteoarthritis (ComOA): a combined cross-sectional, case–control and cohort study using large electronic health records in four European countries
Subhashisa Swain, Anne Kamps, Jos Runhaar, Andrea Dell'Isola, Aleksandra Turkiewicz, Danielle Robinson, V Strauss, Christian Mallen, Chang-Fu Kuo, Carol Coupland, Michael Doherty, Aliya Sarmanova, Daniel Prieto-Alhambra, Martin Englund, Sita M A Bierma-Zeinstra, Weiya Zhang
BMJ Open Apr 2022, 12 (4) e052816; DOI: 10.1136/bmjopen-2021-052816